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化学 高校生

読みましたが、全体的に理解出来ません。英語で理解出来なかったので多分、全文和訳しても理解出来ません。 なので、この写真に載っていることを分かりやすく教えていただきたいです🙇🏻‍♀️

Free energy changes determine if a reaction is endothermic or exothermic. Processes in nature are driven in two directions: toward least MAIN IDEA enthalpy and toward greatest entropy. When these two oppose each other, the dominant factor determines th direction of change. As a way to predict which factor will dominate fora given system, a function has been defined to relate the enthalpy and entropy factors at a given temperature tropy and constant pressure. This combined enthalpy-entropy function is callepd t free energy, G, of the system; it is also called Gibbs free energy. This function simultaneously assesses the tendencies for enthalpy and entropy to change. Natural processes proceed in the direction that lowersthefree energy of a system. Only the change in free energy can be measured. It can be defined in terms of changes in enthalpy and entropy. At a constant pressure and temperature, the free-energy change, AG, of a system is defined as the difference between the change in enthalpy, AH, and the product of the Kelvin temperature and the entropy change, which is defined as TAS. Free Energy Change AGO= AH°- TASO Note that this expression is for substances in their standard states. The product TAS and the quantities AG and AHhave the same umor usually kJ. The units of AS for use in this equation are usually N If AG<0, the reaction is spontaneous. AH and AS in the free-energy equation can have positive or negative values. This leads to four possible combinations of terms.

解決済み 回答数: 1
英語 中学生

答えがなく困っています、教えて下さい😭

5.代名詞 演習問題A に書きなさい。 1 次の英文の( )内から適する語を選び, 口1) My bike is old. Jack's is a new (it/one /its).代名開について学します。 口(2) I don't like this watch. Will you show me (another / other / one)? 口3)(Every/ All/ Each) of the boys are enjoying swimming in the lake. 1,oved (aU L(4) She had to go to the station by (her / herself/ she). 口(5) Jim isa friend of (my / me / mine). 次の日 19d ト 1語を 1) 私 ode 口(6)(This /That / It) was rainy and cold yesterday. 口(7)Someone (am /is / are) knocking at the door. mor 口(8) I got a letter from her. I have to answer (it /its / them) soom 10 modi (v 2) あ y に適する語を書きなさい。 事さ me 2 次の日本文にあう英文になるように, 口(1) 子どもたちはそれぞれ自転車を持っています。 う h of the children has a bike. 口(2)何人かは「はい」 と言い, 残りの人々は 「いいえ」 と言いました。 Some said “Yes, ” and the you your you You your udle a'sotaiewo (4) balfma their pord.uo e said “No. 口(3)私たちは2人とも教室をそうじしなければなりません。hey る of us have to clean the classroom. ne ou e CD 4) 彼らのうちだれも買い物に行きたがりませんo るす 内()文京 of them want to go shopping. aifint gatyala 99m ertt niot ot everi atnsbta sdi lo in ed ei erna ot (5) ケーキをもう1切れいかがですか。 3 Will you have piece of cake? (6) 私たちは何でも自分でやらなければなりません。 We must do everything for /nogpn sheumB) pone中6j9E (7)午前10時15分です。 to.adt GNFON is ten fifteen in the morning. done \Tadho) tnaw 1 (8) すべての学生がコンピュータを持っています。 1adabedt bos dynslaia student has a computer. poda ebeag puajap コ9) この帽子は小さい。私は大きいのがほしい。C でおさ文さ攻本目 either どちらか」 単扱い This hat is small. I want a larger nono fof ~) .【(~のうち)何もだ 10) 私は2人のどちらも知りません。 の hem, (2つの中で)もう I know of won ools'o onin at のもの」every iは (oory 3 次の問いの答えとして適するものを選び,記号で答えなさい。moi 税抜い ngfe (1) Is this your racket or hers? ない」があり 0nelpg ア It's my. イ It's mine. ybody no cnakaobody ウ It's me, 2) Whose are these notebooks? ア It's his. 3) How far is it from here to the station? イ These are his. ウ They are his. ynnua ア This is 2 kilometers. 4) Who broke the window? イ It's 2 kilometers. ilウ That's 2 kilometers. ア Idid it by me. イIdid it by I.otウI did it by myself, か hdかdel 28

解決済み 回答数: 1
化学 高校生

【英語ですみません】最後の12番は何を書いたら良いのでしょうか…? Video C の実験では、aqueous solution にlead(ii) nitrate, aqueous solution にPottasium iodide を入れていました。 2KI (aq)... 続きを読む

With lead (I) nitrate solution. This precipitation reaction produces a bright yellow solid. (point values in parentheses) Part 1: 1. Copy the unbalanced reaction below into your lab notebook. Balance the reaction by adding coefficients. (1) KI (aq) Pb(NO,), (aq) KNO, (aq) Pbl, (s) 2. a) Which trial are you assigned? b) Copy the data table below into your notebook. Watch video A (make sure it's the correct trial!) and collect your data. You may need to pause or rewatch the video, it goes quickly. (1.5) Mass of Empty Beaker (g) Mass of Beaker+ solid Pb(NO,)。(g) Volume of 1.0 M KI (aq) (mL) For the following calculations, show all your work for full credit. 3. What mass of solid Pb(N0,), was added to the beaker? (1) 4. If the solid Pb(NO,), was dissolved in 45 mL of water, what is the molarity of the Pb(NO,)。 solution? (2.5) 5. Which compound is the limiting reactant? (4) 6. What mass of lead (II) iodide (PbL,) should be produced? (2) Part 2: 7. Watch video B (make sure it's the correct trial!) to see the complete reaction and collection of the product. Copy the data table below and record your data. (1) Mass of filter paper (g) Mass of filter paper + dried precipitate (g) 8. What mass of precipitate was collected? Show your work. (1) Calculate the percent yield for the reaction. Show your work. (2) 10. For your trial, which three ions were present in the filtered solution at the end of the reaction? In other words, which three ions are still dissolved at the end of the reaction? Defend/explain your 9. answer. (3) 11. Watch video C - watch both tests for your trial and record your observations. (1) a) Add lead (II) nitrate - b) Add potassium iodide - 12. These tests were conducted to prove the identity of the limiting reactant. Considering your answers to the previous two questions, describe how these tests support the prediction you made in question 5 about which compound is the limiting reactant. (2)

解決済み 回答数: 1